op 	 {
  name: "ReaderReadUpToV2"
  input_arg {
    name: "reader_handle"
    type: DT_RESOURCE
  }
  input_arg {
    name: "queue_handle"
    type: DT_RESOURCE
  }
  input_arg {
    name: "num_records"
    type: DT_INT64
  }
  output_arg {
    name: "keys"
    type: DT_STRING
  }
  output_arg {
    name: "values"
    type: DT_STRING
  }
  is_stateful: true
}
